Coating of metal articles.



' I 3 T .135 .11 k l /10 ,5' E s *A pmrssns s. .matera-oregon msrneron-rrnns'rrvamal ToaZZwhonittma/yconcem:

18e4 it known that iI, ULYssas a full, clear, and exact descriptionthereof.

-metal articles, and has special l.reference to.; `the coating of theinterior and -exterior sarg i 4,l which extends down :from the top ofsaidv :portion for a suitable dista-nce and dividesI faces of pipes ortubes. 1

The object of my invention is `to vprovide a cheap, simple 'and eieientapparatus for@ l u g 6, as well as .forming part of 'the inner lwall 'ortubes, which willrenable .such articles .-tof be coated on their innerand outer surfaces` in a rapid -andeasy manner 'with a metallic thecoating-olf metal articles, such as pipes coatinsuch as lead and tin,"or `ziznc,'as well a ing 'such a coating to be 4formed on.

asl en such articlesevenl and uniformly and without .any waste o the:material-composing:

such coating.

To these ends my invention iconsists, genorally stated, in the novelarrangement, conf struction and combination ofparts employed g in myimproved coatin of metal articles,;

. as hereinafter -more speclcally :set .forth 'and described andparticularly pointed out in the claims.

4 accompanying drawing, in whichratus employed in my improved coati ofimetal articles. Fig. 2 is .an end view o the 'l Figure 1 is a top planview of the appasame.-A Fig. 3 is a cross section of the same on theline 3 3 Fig. 1. Fig. 4 is a longitudinal section of -the same on theline 4 4 Fig. 1, looking in the direction lof the arrow.-

Figs.,5 and 6 are views of the-swabbing #devicesemployed. Fig. 7 showsanother orm Aof the device.

Likesymbols of reference herein indicate; like parts .in each of the-igures of thel drawing,

p S. Aam- STRONG, a resident of New Kensington, in the g county -ofWestmoreland vand 4State of/Pwenn- Sylvania, Ihaye invented a new andimprovement 'n Coating-fof Metal Articles; and I do shereby ldeclarethe-'following tobejl .Asia-Summa inthe drawing, impressum the dank,'which :is provided .ing `the materia'ls within such tank vfort/he'coating -of the articles to the desired degree, 'and such 'tankisprovided with the lower 'or lbase.portion-p9J and thefupper ,portion 3,exe l 's tendmg up from 'and at one :side of 'said My invention relatesto the coating zotfg A spmnwan of maenrmnt. vPatented Dec. T9, i911.appliafionmea november-1,1910.. .serialgm. nuria?.4

to l wi-th the usual,- heating lfurnace 1 under the same -for heat--lower portion. YllVit-hin the lowerv portionsuch portion into thecompartments -5 and of the lupper portion y3 located above thecompartment 5. The wall 4 is provided with the projecting portions 7.and 8 at veach .end of the same, `wl-ii'ch extend from each side ofsaid wall,;and are adapted to form pockets -9 and 10 inv said wall andon each side of the isame ,for the purpose hereinafter described. Withinthe'ntank 1 are the two shafts 1-1 and .12, one of which is .placed oneach side -of such tank and preferably on :an rinclinegfin .parallellines with each other. 'llhesevsharts 11 and 1.2 are `powerdriven in anysuitable manner and are .adapted to be .rotated -or revolved in theYsaine-and inthe v roper direction, as shown by the arrows .in To enableothers skilled in the art to which my invention appertains toconstruct'fand use the apparatus employed in'my .im- 2' proved coating of Imetalarticles, I will describe the same more fully, referring to the ig. 3.',llhev shaft 11 is provided with a wheel 113 lhaving radial arms 14thereon at each end of the same, and lthe shaft'12 is. provided with a-similar wheel 15 having similararms 16 thereon` at each end of thesame. These wheels 13 and 15l `are ,also arranged vso that lthe ends oftheir respective 'arms 14 vand 16 will-travelwithin their respectivepockets 9vand 10 :in the wall 4 ofthe tank 1 in 'the movement of saidwheels through said tank -by the shafts 11 and 12, and are alsovarrzmged so that such arms on ythe end wheels 13 and l5 will overlapand' at the same time be away from 'each other by their being inthepockets9 and 10 of -the wall 4. When .such arms 14 and 16 on thewheelsll-l and 15 .are :in movement thro h the tank 1, the lower ends ofthe same w1ll pass falong and be adjacent to the curved guides orbottoms 17. and 18 in the compartments 5 and 6 respectively of saidtank, and such bottoms are connected together at their inner ends by thecentral raised portion 19 between the same,

The use and operation of my improved apparatus for cating met-alarticles is as v 4and 6 of the portion 2 in the tank 1 are filled .withthe ooatin compound, such as lead and l tin, or zinc, which forms thecoating bath b, and reaches the level of the wall/1,011 slightly abovethe same, while the flux bath c of the usual material or compoundv forpreparing the'pipes ortubes a for the coating compound in the bat-h b isplaced in the upper 'port-ion 3 of the tank and rests upon that "part ofthe material of the coating bath b that is within lthe compartment 5 ofsaid tank.l The tank l being thus ready for the coating operation, thepipes a so cleaned are each placed between two of the alined arms 14 onthewheels 13, as said wheels are revolved by the shaft 11, and suchpipes are thus passed down through the flux'bath c in the portion 3 ofthe vsaid tank, and then they are passed by said wheels into the coatingbath b in the compartment 5 of the lower portion 2 of said tank. Wheneach of the pipes a carried by the arms 14 on the wheels 13 reach theraised portion 19 on the guides or bottoms 17 and 18 of the tank 1 theypass over said raised portion and are each caught by and between two ofthe alined arms 16 on the wheels 15, which wheels are being revolved inthe same direction as the wheels 13, so that such arms will act to carrysaid pipes through the coating bath b in the compartment- 6 of the lowerportion 2 of said tank until they reach the upper part of saidcompartment and then each of said pipes are ejected from saidcompartnient and out of said tank on the supporting table 20 at the sideof said tank. As each one of the pipes a are thus passed through theflux bath c and coating bath b and are ejected from the tank 1, anysurplus material from said bath b is dra-ined from said pi es back intosaid bath by reason of one endpot such pipes being slightly elevated onaccount of the wheels 13 and 15 at one end of the tank 1 being soelevated and the' coat-ing compound entering said pipes in their passingfrom the bath c into the bath b being heavier than the flux will holdsaid flux at its level, so that it is kept .in the flux bath c and doesnot thereby mix with said coating. When the pipes a are thrown out ofthetank 1 after being so coated in the bath b and onto the asbestos coatedtable 20, each of the same can then be caught by any suitable means ormechanism and passed through a suitable swabbing device 21, whichiscomposed of a resilient collar or piston 22,01 asbestos or othersuitable.

material supported on' a rod 23 and engaging withy the interior of suchpipe and a die 24 having a base 25 and movable cover 26 provided withsimilar material 27 for engaging withthe exterior of such pipe torecover any further surplusage of the coating material upon suchsurfaces of said pipe, and to further coat any places on said pipe whichmay not have taken t-he molten coating while passing through said. tank.

t will be evident that the swabbing operation on both -he interiorandexterlor sur- .s

faces of the time as descrlbed, or at separate times, and

,by a continuous operation, as desired, while coating of metalvarticles,'such as pipes, the pipes 1n` striking the coating compoundin' the first compartment at the bottom of the tank will drive the fluxpreviously placed on such pipes ahead of the coating oompound, whichwill permit such fiux to remain above said compound in its bath, andthen such pipes are passed under the partition or wall into the secondcompartment and are raised out of the molten mixture or coating compoundfor the swabbing operation, all by mechanical means, thereby enablingthe rapid handling and coat-ing of such pipes. l/Vith one end of thepipes bef ing sllghtly elevated in passing through the tank, so as toincline such pipes, the material or ingredients com )osing the flux bathand coatin Jbath to w ich such pipes are subjected will always remain,or go back into their lrespective baths in the tank and thereby preventany waste of such material, as well assome of the material of thecoating bath removed by the swabbing process can be saved into suitablepots or in any suitable devices, so that such pipe will receive auniform and thin coating at the least pos sible expense. The apparatusemployed bein automatic in its operation will notrequire any attent-ionor handling of the pipes and will perform its work in a clean andworkmanhke manner.

pes can be perfgfined at one l" What I claim asm invention and desire tosecureby Let-ters Jatent is= 1. In an apparat-us for coating metal'articles, the combination with 'a tank having a bath of molten coatingmaterial therein and a bath of flux above and at one side 0f i ticles,the combination with a tank vhaving a bath of molten coating materialtherein and a bath of tlux above and at'oneside of said coating bath andcontacting therewith, and rotary means within'said tank having overlaping arms for carrying and passing the articles through said iiux andcoating baths. A l

3. In an apparatus for coating metal articles, the combination with atank having a bath of molten coating material therein and a bath of fluxabove and at one side of said coating bath and contacting therewith, androtary means on each side of said tank and adapted tov overlap eachother for carrying and passing the articles through said flux andcoating baths.

4. In an apparatus for coat-ingmetal articles, the combination with atank having a bath of molten coating material-therein and a bath of tiuxabove and at one side of said coating bath and contacting therewith, androtary means on each side of said tank having radial arms thereon andYadapted lto overlap each other for carrying and passing the articlesthrough said flux and coating baths.

Inl an apparatus for coating metal-articles, the combination with a tankhaving a.

bath of molten coating material therein and a bath of fiux above and atone side of said coating bath 'and contacting therewith, said tankhaving a curved bottom guide, and rotary means on each side of said tankhaving arms adaptedto overlap each other for carrying and passing thearticles through said flux and coating bat-hs and along said bottomguide.

6. Inan apparatus for coatingmetal ar-V ticles, the combination with atank having a bath of molten coating material therein and a bath of fiuXabove and at one side of said coating bath and contacting therewith,said tank having a doubled curved bottom guide provided with araisedcentral portion between the same, and rotary means on leach side of saidtank having arms adapted to overlap each other for carrying and passingthe articles through said flux and coating baths, along said bottomguides and over said raised portion.

7. In an ap aratus for coating metal articles7 the com ination with atank having a the articles t miaou f bath of' molten coating materialtherein and W65 a bath of tiux above and at one side of said coatingbath and Contactin therewith, a di- Vision Wall in'said tank or dividingsaid coating bath into two compartments, and 'means within said tank andon each side of vsaid wall'for carrying and passing thearti` .clesthrough said flux bath and each ofsa'id coating compartment baths. A Y

8. In an apparatus 'for coating metal articles, the combination with atank having a bath offmolten coating materialtherein and a bath of fluxabove and at one side of-said coating bath and Contactin therewith, adivision wall said tank or dividing lsaid coating bath into twocompartments,` and rotary means within said tank and on peach),

side o f said wall vfor carrying and passing rough said iux bath andeach of s ad coati g compartment baths.

9. In an apparatus for coating metal ar ticles,the combination with atank having a bath of molten coating material therein and a bath of fluxabove and at one side of said coating bath and contacting therewith, adivision wall in said tank for dividing said coating bath into twocompartments, and rotary means within said tank and on each side of saidwall for carrying and passing said articles through said flux bath andeach of said coating compartment baths.

10. `In an apparatus for coating metal ar.- ticles, the comblnation witha tank having'a bath of -molten coating lmaterial therein 'and a -bathof flux above and atl one sideof said coating bat-h and contactingtherewith, a division wall in said tank for dividing said coating bathinto two compartments and provided with pockets-"on each side of thesame, and rotary means within said tank and on each side'of said walland adapted to overlap each other in said pockets for carrying and,passin the artic es through said flux bath and eac ment baths.

11. In an apparatus for coating metal articles, the combinationkwith atank having a bath of molten coating material therein and a bath of iiuxabove and at one side of said coating bath and contacting therewith, adivision wall in said tank for dividing said -coating bath into twocompartments and of'said coating compartprovided with pockets on eachside of the i same, said. tank having a curved bottom guide in each ofsaid compartments, and ro.

tary means within said tank o n each side of Isaid wall and adapted tooverlap each other in said pockets for carrying and passing the. j

articles through said flux bath and along said guides in each of saidcoating compartment baths.

12. In an apparatus for coating metal ar ticles, the combination with atank having a bath of molten coating material therein and vcoating hathald contactin therewith, a dia bath of thi-i labove and at one side ofsaid ing the articles through said flux bath Vand along said guides ineach of said 'coatin compartment baths and over said raise portion. o.

vision Wall in y:said tank or dividing said coating bath into twocompartments and 18 provided with pockets on each side'of the Intestimony whereof', I, the said ULYSSLS same, saidV lanlf; having acurved bottl m-l S. ARMSTRONG, have hereunto set my hand. guide in eac osaid compartments Wit a 4 raised central portion between the same, andULYSSES S' ARMSTRONG rotary means within said tank on each sideWitnesses:

of said Wall and adapted to overlap each JOHN E. MCGALMONT,

other in said pockets for carrying and passg T. B. HUMPHRIEB.

